(1)有机物M经过太阳光光照可转化成N,转化过程如图:
△H=+88.6kJ•mol-1
(2)火箭和导弹表面的薄层是耐高温物质。将石墨、铝粉和二氧化钛按一定比例混合在高温下煅烧,所得物质可作耐高温材料,4Al(s)+3TiO2(s)+3C(s)=2Al2O3(s)+3TiC(s) △H=-1176kJ•mol-1,则反应过程中,每转移1mol电子放出的热量为
(3)CH4、H2、C都是优质的能源物质,它们燃烧的热化学方程式分别为①CH4(g)+2O2(g)=CO2(g)+2H2O(l) △H=-890kJ•mol-1;②2H2(g)+O2(g)=2H2O(l) △H=-571.6kJ•mol-1;③C(s)+O2(g)=CO2(g) △H=-393.5kJ•mol-1;CH4、H2组成的混合气体2mol,完全㜔烧后放出热量1297.0kJ能量,该混合气体中CH4与H2的物质的量之比n(CH4):n(H2)=
(二)0.50mol•L-1的盐酸与0.50mol•L-1的NaOH溶液在如图所示的装置中进行中和反应。通过测定反应过程中所放出的热量可计算中和反应反应热,回答下列问题:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed14f99fddea2f45471370209b8cc5b.png)
![]() | 2.0 | 1.0 | 0.67 | 0.50 | 0.33 | ![]() |
溶解放热![]() | 15.8 | 27.8 | 35.9 | 41.6 | 48.9 | 95.3 |
A.当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d39c8d79b4296f704422024b198fe6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c2d3ab2cda51ea3513c82df8f58042.png)
B.向
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69774b3f9baa5878a5169cfdd6b1cc64.png)
C.用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d240f1d4f08b713fbaf9ce16e0967d5d.png)
(5)取50mLNaOH溶液和30mL硫酸溶液进行实验,实验数据如表。
实验次数 | 起始温度t1/℃ | 终止温度t2/℃ | 温度差(t1-t2)/℃ | ||
H2SO4 | NaOH | 平均值 | |||
1 | 26.6 | 26.6 | 26.6 | 29.1 | 2.5 |
2 | 27.0 | 27.4 | 27.2 | 31.2 | 4 |
3 | 25.9 | 25.9 | 25.9 | 29.8 | 3.9 |
4 | 26.4 | 26.2 | 26.3 | 30.4 | 4.1 |
②近似认为0.50mol•L-1NaOH溶液和0.50mol•L-1硫酸溶液的密度都是1g•cm-3,中和后生成溶液的比热容c=4.18J•(g•℃)-1.则中和热△H=
(6)下列说法正确的是
a.为了使反应充分进行,药品可以分多次加入
b.完成一次中和反应反应热平行样的测定,温度计需要使用2次
c.测量NaOH与不同种类的酸(如HCl、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/710cba6e15521c742c3b2535eadd19ba.png)
d.用温度计测定NaOH溶液起始温度后直接测定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503df0c0a55e256791c34e0f48c9c146.png)
相似题推荐
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2084137acb798fc71b7ed23c3988f0e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/0a5b8dc9-1a8f-4b02-8275-d8926acac009.png?resizew=550)
I II III
请回答下列问题:
(1)中和热测定的实验中,用到的玻璃仪器有烧杯、温度计、量筒、
(2)用醋酸代替盐酸溶液进行上述实验,测得的中和热的数值会
(3)若在实验过程中,不把温度计上的酸用水冲洗干净直接测量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce93086f0133444d40743d654cba1c55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e1324e1e9318481b6e7264c8595804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b160cc3ed11ffef6441b1923a5750cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1452fcaab18702d81aac1ecab0d64b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d79e7432b0eaece27f5e563be188fae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2fe6a5664a7b2b32f45bae85498008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d8f62db1b7aecb90213d97f04d94aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bde841a2d2a469d7aea65f21433662a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cde03068deb44bd00e929884761b9d.png)
(4)工业上可通过天然气跟水蒸气反应制取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3616a3df70ce2a70cc8642fad86c993a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d529dd8302544058eb2930a98a7d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cde03068deb44bd00e929884761b9d.png)
(1)有机物M经过太阳光光照可转化成N,转化过程如图:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/117c8221-397b-4bdf-aab8-c74ed0d0f947.png?resizew=198)
则M、N相比,较稳定的是
(2)火箭和导弹表面的薄层是耐高温物质。将石墨、铝粉和二氧化钛按一定比例混合在高温下煅烧,所得物质可作耐高温材料,4Al(s)+3TiO2(s)+3C(s)=2Al2O3(s)+3TiC(s) △H=-1176kJ•mol-1,则反应过程中,每转移1mol电子放出的热量为
(3)CH4、H2、C都是优质的能源物质,它们燃烧的热化学方程式分别为
①CH4(g)+2O2(g)=CO2(g)+2H2O(l) △H=-890kJ•mol-1;
②2H2(g)+O2(g)=2H2O(l) △H=-571.6kJ•mol-1;
③C(s)+O2(g)=CO2(g) △H=-393.5kJ•mol-1;
CH4、H2组成的混合气体2mol,完全㜔烧后放出热量1297.0kJ能量,该混合气体中CH4与H2的物质的量之比n(CH4):n(H2)=
(二)0.50mol•L-1的盐酸与0.50mol•L-1的NaOH溶液在如图所示的装置中进行中和反应。通过测定反应过程中所放出的热量可计算中和反应反应热,回答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/476adf18-829f-40d4-8e0b-623808b57e45.png?resizew=141)
(4)实验中若改用60mL0.50mol•L-1的盐酸与50mL0.55mol•L-1的氢氧化钠溶液进行反应,若实验操作均正确,则所求中和热
(5)取50mLNaOH溶液和30mL硫酸溶液进行实验,实验数据如表。
实验次数 | 起始温度t1/℃ | 终止温度t2/℃ | 温度差(t1-t2)/℃ | ||
H2SO4 | NaOH | 平均值 | |||
1 | 26.6 | 26.6 | 26.6 | 29.1 | |
2 | 27.0 | 27.4 | 27.2 | 31.2 | |
3 | 25.9 | 25.9 | 25.9 | 29.8 | |
4 | 26.4 | 26.2 | 26.3 | 30.4 |
②近似认为0.50mol•L-1NaOH溶液和0.50mol•L-1硫酸溶液的密度都是1g•cm-3,中和后生成溶液的比热容c=4.18J•(g•℃)-1。则中和热△H=
(6)下列说法正确的是
a.向内筒中加入稀盐酸时,应当缓慢而匀速地加入
b.将用量筒量取好的稀盐酸如入内筒后,应当快速用水冲洗量筒内壁剩余的稀盐酸至内筒中,以免造成测量误差
c.用量筒量取稀酸或碱时,眼睛必须与液体凹面最低处相平
d.内筒洗净后,未及时烘干,直接用该内筒进行实验,对生成1molH2O(l)时所测得的中和反应的反应热(△H)有影响,△H会偏大
(1)一氧化碳催化加氢制甲醇,反应原理为:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7044bc7e5e2bd0d89ebc293ac61a62ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2922ae637886073827dff8c97681427.png)
①若已知CO、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750859dd7d5b821d909e6a32c11095cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a5c6d26e9821c59de16c928dcb79f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9388721e78766564c83068949b67f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4fe51b737716cfa18ad0d9391e5a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56731fc59514f8470617cace31ca3599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51429b5de9d10163c5a5c45ab8dd0a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff23bcf2e0eb5a787d9591bc32fd30b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d529dd8302544058eb2930a98a7d71.png)
②已知反应中相关的化学键键能数据如下:
化学键 | ![]() | ![]() | ![]() | ![]() |
![]() | 436 | 413 | 343 | 465 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf0d596ec55d59fad23fd90afdb3c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37a8fa52b383f4dc548574a58fbfcac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2ea46ce80ea3b462ebce8cc6250af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5958447f24f984f421578f5db041c7.png)
(2)燃料的热值是指单位质量某种燃料完全燃烧放出的热量,其常用单位为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808c4758a6263bb0ad69dbd09997d86d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e43f18428827eeb4ae5204d7ccd654.png)
燃料 | ![]() | ![]() | ![]() | ![]() |
燃烧热/(![]() | 285.8 | 283.0 | 890.3 | 5518 |
①试写出表示辛烷燃烧热的热化学方程式
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff19349a80467d65564cc2953f0c978.png)
③上表所列燃料的热值最大的是
(3)中和热是反应热的一种。
①取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836c3e526735eebee29ee4c5b9bb22c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd78f6d26e7b600df84f4434487150c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a90ab5f2eb4a90f8f58940bd13d552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f64674ed9517839bd081878867bc012.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b087a3ea4a318f5acd72312f847b5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17c536863f80ab11ebdae98d65eea32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca11a31b9c4c3fd48ce4d0e37c5f83f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49932ed4cc0ca1b86ea2746a4126bf03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d529dd8302544058eb2930a98a7d71.png)
②强酸与强碱的稀溶液发生中和反应生成
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49932ed4cc0ca1b86ea2746a4126bf03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ecf8dc173e55d9e8d3d58187e61b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed7e95f597f29005f6c089f0c66fb27c.png)
(1)有机物M经过太阳光光照可转化成N,转化过程如图:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/117c8221-397b-4bdf-aab8-c74ed0d0f947.png?resizew=198)
则M、N相比,较稳定的是
(2)火箭和导弹表面的薄层是耐高温物质。将石墨、铝粉和二氧化钛按一定比例混合在高温下煅烧,所得物质可作耐高温材料,4Al(s)+3TiO2(s)+3C(s)=2Al2O3(s)+3TiC(s) △H=-1176kJ•mol-1,则反应过程中,每转移1mol电子放出的热量为
(3)CH4、H2、C都是优质的能源物质,它们燃烧的热化学方程式分别为
①CH4(g)+2O2(g)=CO2(g)+2H2O(l) △H=-890kJ•mol-1;
②2H2(g)+O2(g)=2H2O(l) △H=-571.6kJ•mol-1;
③C(s)+O2(g)=CO2(g) △H=-393.5kJ•mol-1;
CH4、H2组成的混合气体2mol,完全㜔烧后放出热量1297.0kJ能量,该混合气体中CH4与H2的物质的量之比n(CH4):n(H2)=
(二)0.50mol•L-1的盐酸与0.50mol•L-1的NaOH溶液在如图所示的装置中进行中和反应。通过测定反应过程中所放出的热量可计算中和反应反应热,回答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/476adf18-829f-40d4-8e0b-623808b57e45.png?resizew=141)
(4)实验中若改用60mL0.50mol•L-1的盐酸与50mL0.55mol•L-1的氢氧化钠溶液进行反应,若实验操作均正确,则所求中和热
(5)取50mLNaOH溶液和30mL硫酸溶液进行实验,实验数据如表。
实验次数 | 起始温度t1/℃ | 终止温度t2/℃ | 温度差(t1-t2)/℃ | ||
H2SO4 | NaOH | 平均值 | |||
1 | 26.6 | 26.6 | 26.6 | 29.1 | |
2 | 27.0 | 27.4 | 27.2 | 31.2 | |
3 | 25.9 | 25.9 | 25.9 | 29.8 | |
4 | 26.4 | 26.2 | 26.3 | 30.4 |
②近似认为0.50mol•L-1NaOH溶液和0.50mol•L-1硫酸溶液的密度都是1g•cm-3,中和后生成溶液的比热容c=4.18J•(g•℃)-1。则中和热△H=
(6)下列说法正确的是
a.向内筒中加入稀盐酸时,应当缓慢而匀速地加入
b.将用量筒量取好的稀盐酸如入内筒后,应当快速用水冲洗量筒内壁剩余的稀盐酸至内筒中,以免造成测量误差
c.用量筒量取稀酸或碱时,眼睛必须与液体凹面最低处相平
d.内筒洗净后,未及时烘干,直接用该内筒进行实验,对生成1molH2O(l)时所测得的中和反应的反应热(△H)有影响,△H会偏大
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e483ba1857f9e9b12f91455002dcf01b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f401a7cb4e69682394c05500e1447b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2084137acb798fc71b7ed23c3988f0e1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/0a5b8dc9-1a8f-4b02-8275-d8926acac009.png?resizew=550)
I II III
请回答下列问题:
(1)中和热测定的实验中,用到的玻璃仪器有烧杯、温度计、量筒、
(2)用醋酸代替盐酸溶液进行上述实验,测得的中和热的数值会
(3)若在实验过程中,不把温度计上的酸用水冲洗干净直接测量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce93086f0133444d40743d654cba1c55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e1324e1e9318481b6e7264c8595804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b160cc3ed11ffef6441b1923a5750cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1452fcaab18702d81aac1ecab0d64b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d79e7432b0eaece27f5e563be188fae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2fe6a5664a7b2b32f45bae85498008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d8f62db1b7aecb90213d97f04d94aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bde841a2d2a469d7aea65f21433662a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cde03068deb44bd00e929884761b9d.png)
(4)工业上可通过天然气跟水蒸气反应制取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3616a3df70ce2a70cc8642fad86c993a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d529dd8302544058eb2930a98a7d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cde03068deb44bd00e929884761b9d.png)
(1)已知相关热化学方程式为:
4Al(s)+3O2(g)=2Al2O2(s) △H1=a kJ•mol﹣1
3MnO2(s)=Mn3O4(s)+O2(g) △H2=bkJ•mol﹣1
3Mn3O4(s)+8Al(s)=9Mn(s)+4Al2O3(s) △H3=ckJ•mol﹣1
则3MnO2(s)+4Al(s)=3Mn(s)+2Al2O3(s) △H=
(2)MnCO3广泛用作锰盐原料.通过如图装置焙烧MnCO3可以制取MnO2,反应方程式为:2MnCO3(s)+O2(g)═2MnO2(s)+2CO2(g)。
![](https://img.xkw.com/dksih/QBM/2017/3/17/1645927127662592/1647945567158272/STEM/48c3cd23febf423ca1baa3372adebf25.png?resizew=516)
①2MnCO3(s)+O2(g)⇌2MnO2(s)+2CO2(g)的化学平衡常数表达式K=
②用真空抽气泵不断抽气的目的除保证反应持续进行外,还有
③若该反应在绝热、恒容的密闭体系中进行,下列示意图正确且能说明反应在进行到t1时刻达到平衡状态的是
![](https://img.xkw.com/dksih/QBM/2017/3/17/1645927127662592/1647945567158272/STEM/ad11ba958439429ba188997cdbd07edc.png?resizew=576)
(3)MnO2常用作催化剂。MnO2催化降解甲醛的反应机理如图所示,图中X表示的粒子是
(4)MnSO4是重要微量元素肥料。用惰性电极电解MnSO4溶液可以制得更好活性的MnO2,电解时总反应的离子方程式为:
反应I:CO2(g)+3H2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
反应II:CH3OCH3(g)+H2O(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
反应III:2CO2(g)+6H2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30bd52fbc729100498b5300daf60350.png)
(1)∆H3=
(2)在绝热恒容的密闭容器中,将CO2和H2按物质的量之比1:3投料发生反应I,下列能说明反应已达平衡的是
A.体系的温度保持不变
B.CO2和H2的转化率相等
C.单位时间内体系中3molH2减少的同时1molH2O增加
D.合成CH3OH的反应限度达到最大
(3)已知:反应II在某温度下的平衡常数的值为2,在此温度下向密闭容器中加入等物质的量的CH3OCH3(g)和H2O(g)发生该反应,某时刻测得CH3OCH3、H2O、CH3OH的浓度依次为1.5mol/L、1.5mol/L、1mol/L,此时CH3OCH3的转化率是
(4)在某压强下,反应I在不同温度、不同投料比时CO2的平衡转化率如图所示。则温度Tl
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/25/7e793192-a3c2-494a-838c-36efbedb3051.png?resizew=268)
(5)恒压下将CO2和H2按体积比1:3混合,在不同催化剂作用下发生反应I和III,在相同的时间段内CH3OH的产率、选择性随温度的变化如图所示。其中CH3OH的选择性=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87542e11630dee886de171b13d000682.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/25/7d4cce1b-2d11-4f4d-b18a-3e3890ebdd40.png?resizew=399)
①当温度高于230°C时,CH3OH产率下降的可能原因是
②在上述条件下合成甲醇的工业条件是
A.210℃ B.230℃ C.CZT催化剂 D.CZ(Zr-1)T催化剂
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e1146ea6acdf976615b7e10aba569f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62797e1a985bb7b7ac19c052e02fda69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dee09a3a7f5e99c2475144a79649eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6ac1505b278764fde370bf39018d3b.png)
Fe3O4(s)+CO(g)═3FeO(s)+CO2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79af377c93e829c4e4f1697f2e1b8ad1.png)
写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64fd905f7161ed86ef90ec63bf546f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71c86dcd9a9e9b09bbbb65b9d313435.png)
(2)直接氨硼烷
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a384319b681aa60d056bde1694922d2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e047dad7ddd9d7d5958eac04b988271.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/15/81427ab9-f748-425b-9778-e0e679300722.png?resizew=196)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1987de2c79a614356070c4106bc7926.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/15/5be8fe57-aa61-4619-bc33-9bd0c7d2ea22.png?resizew=201)
(4)1.52g铜镁合金完全溶解于50mL密度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5df4cca6ade87648c649b6d1ef65090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a6c15428939414834c004df67176f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d4fb62d809cb43c9db4996658a310d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/313d1994908372180cb7ab93e499347c.png)